I'm having the same problem. Sounds like it's screaming. Neighbors thought it was my smoke alarm. LOLI'm having the same problem. Sounds like it's screaming. Neighbors thought it was my smoke alarm. LOL

I'm aving te same issue. The loud sound only happens when I have cleaning brush set to carpets. Any suggestions would be appreciated.I'm aving te same issue. The loud sound only happens when I have cleaning brush set to carpets. Any suggestions would be appreciated.

yes i am having the same problem with my dyson it screaches i have took it all apart and cleaned everything i can't find the problemyes i am having the same problem with my dyson it screaches i have took it all apart and cleaned everything i can't find the problem

If the screeching noise is happening at all times, it is most likely a motor failure; which unfortunately can only be resolved by complete replacement of the motor.
If it's a loud ratchety-screeching type sound, and is only occurring when the brush is set to carpet, it is most likely due to an obstruction of the brushroll or a problem with the clutch. Ensure that the brushroll can spin free, look for anything physically blocking it. Check the bearing ends on the brushroll, they can melt and cause the brushroll to not spin effectively. If neither of those two things resolves the problem, the clutch most likely needs replacement.

I called Dyson and they said that the motor needs replacing. I bought it in the UK, and moved it to the US and now am in Brazil. They said they can't service it since it was bought in the UK unless I take it back to the UK since the motors, wiring, etc are different. They said the motor would eventually go out and there's nothing they can do.

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Here are some things you can check.First you need to see if the problem is with the suction or agitation.If the suction on the hose for using the attachments is low you either need new filters a new cyclone(they are not cleanable) or it is clogged.To check for a clogg remove the cyclone and turn on the vacuum cleaner.you can put your hand over the suction side of the handle tub and feel if it has suction there.Reinstall the cyclone and again check the hose.If it is the same you don't likley have a suction problem you have an agitation problem.The 2 belts on the DC07 are part of the clutch and when they are strectched to a certain point (3-5years) the clutch needs to be replaced.you can check the clutch by turning on the vacuum cleaner and applying slight pressure downward on the front of the vacuum head.If the vacuum makes a loud ratcheting noise or you can stop the brush from turning the problem is most likely the clutch.One last thing is to make sure the bottom plate is on correctly I often see a misaligned bottom plate and the brush dosen't hit the carpet so it dosen't pick up. www.sewvac.com

Trace the path of the suction into the tank and see if there is anything loose or ingested.
Also, remove the brush and clean as best you can. Perhaps there is something caught in it. Lubricate where it makes sense with some WD40.

first, check both filters on that unit. the premotor filter on the side, and the hepa filter underneath the canister. if those filters are clean move through the suction channel and look for a clog or obstruction. also make sure the canister is clean. I have never seen the thermal go bad on those machines (not saying it cant happen though). it sounds like the filters are dirty or you have a clog. its also a good idea to change the pre motor filter if its older than a yr. the foam is fine but the white material behind the foam gets clogged frequently. let me know if you have any other questions and if this doesnt fix the problem.

First, check all of the ports, there are various covers you can take off to see if there is a clog, also check the hose for a clog. Make sure all filters are clean out. The worse case would be a motor problem.

Wow...this is one of the only "bad suction" examples I have seen. I do know that after I clean my DC07, I have to make sure that the adapter pieces are seated properly, otherwise there's an air gap.

Have you tried connecting the hose instead of the main part? Is suction still bad? If so...then it's the motor. If not, then go back to check the adapter pieces or see where there's a blockage...look harder.